How do you motivate 300 battle-weary cavalrymen to voluntarily leave their encampment in the dead of winter, ride more than 75 miles across snow-covered mountains, and then attack an enemy garrison force more than three times larger?

Confederate Gen. Thomas L. Rosser faced just such a challenge 150 years ago this week at his brigade’s winter quarters near McDowell, Virginia, where food and warm clothing were in short supply following a successful Union sweep through the Shenandoah Valley the previous fall. Rosser began honing his leadership skills while a cadet at West Point, where his roommate was George Armstrong Custer, before dropping out two weeks before graduation, at the outset of the Civil War, to accept a commission in the Confederate Army, in which he rapidly advanced through the ranks. But on this occasion, hunger and discomfort likely trumped charisma in raising volunteers for the planned raid.

On Jan. 9, 1865, Rosser and 300 volunteers drawn from 9 Virginia regiments rode westward on the Staunton-Parkersburg Turnpike toward the Union supply depot at Beverly, guarded by two regiments of Ohioans — a force totaling nearly 1,100 troops. After spending the first night in a church and a scattering of houses atop Allegheny Mountain, Rosser’s force rode on, crossing the Greenbrier River and Cheat Mountain, where rain changed to snow, causing the Confederates’ overcoats to freeze solid and “rattle like boards,” according to Thomas J. Arnold’s “A Battle Fought in the Streets: Rosser’s Beverly Raid of 1865.”

As the Confederates approached Beverly at the end of the second day of their trek, they stopped at the family home of one of Rosser’s volunteers to rest and gather information about the Union garrison, including the fact that the federal officers had spent much of the night at a dance in Beverly’s Leonard Hotel and should be fast asleep at the time of the raid, planned to take place just before dawn. The enlisted troops, Rosser was told, were housed in a series of log huts, and were also expected to be sleeping through the subfreezing night.

When the attack began on Jan.11, 1865, the federal troops were taken completely by surprise.

“The Federals, such as were not captured, retreated, fighting through the streets of Beverly and across the bridge on the road to Buckhannon,” Arnold wrote. After about 30 minutes of fighting, 6 Union troops were dead, 23 were wounded and nearly 800 were captured. About 150 Union troops managed to escape to safety in Buckhannon. Confederate losses were one dead and several more wounded. The Confederates helped themselves to nearly 10,000 rations from the Union supply depot, along with 600 rifles and 100 horses.

By the time the Confederate raiders returned to Staunton, about 250 of their prisoners had escaped, including the garrison’s commander, Lt. Col. Robert Youart, who was later relieved of duty for his role in the debacle.

After learning of Rosser’s success, Union Army Maj. Gen. Philip Sheridan wrote that he had advised Gen. George C. Crook, commander of federal forces in West Virginia, “some time ago to break up the post at Beverly; it is of no use, and is bait for the enemy, both from position and gross carelessness, and want of discipline on the part of the troops.”

The raid was the last significant action to take place in Randolph County during the Civil War.

Despite leading his cavalry against his former college roommate’s cavalry force on several occasions during the war, Rosser and Custer remained friends. In June 1864, Rosser captured Custer’s entire supply train, including the flamboyant general’s personal wardrobe, during the Battle of Trevilian Station. Custer returned the favor a few months later during the Battle of Tom’s Brook, when Rosser’s supply train, including his personal wardrobe, was seized by his classmate’s troops.

“Please accept my good wishes and this little gift — a pair of your draws (sic) captured at Trevilian Station,” Rosser wrote his friend.

“Thanks for setting me up in so many new things,” Custer replied after capturing Rosser’s headquarters wagon. “But would you please tell your tailor to make the coat tails of your next uniform a trifle shorter?”